Respiratory Infectious Diseases / COVID-19 – Tips

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This tip sheet is for employers, managers, and workers involved in education services including daycares, elementary and secondary schools, and post-secondary education.

Respiratory infectious diseases (RIDs), such as COVID-19, influenza, and respiratory syncytial virus (RSV), are caused by pathogens (germs). Many people who get sick with respiratory infectious diseases experience mild symptoms and recover fully. Still, some vulnerable individuals (e.g., immunocompromised, older, pregnant, etc.) are at risk of severe complications and death.

Infected individuals can spread pathogens through respiratory particles when they cough, sneeze, speak, sing, shout, or breathe. Some infected people display no symptoms but are still contagious (asymptomatic). People can become infected when they inhale particles that contain pathogens or by touching contaminated surfaces and then touching their eyes, nose, or mouth with unwashed hands.

In all cases, follow guidance and requirements from your local public health authority and your jurisdictional occupational health and safety (OHS) regulator.

Refer to guidance from the Public Health Agency of Canada (PHAC) and the Canadian Centre for Occupational Health and Safety (CCOHS) for general respiratory infectious disease prevention practices:

Respiratory Infectious Diseases: Health and Safety Resources

Protect Yourself and Others: Control Measures for Respiratory Infectious Diseases (RIDs)

Specific tips for Educational Services

  • Communicate to all workers, parents, guardians, and visitors that anyone (including children) with symptoms of a respiratory infectious disease (even mild symptoms) should not enter or stay on the premises
  • Ventilate indoor spaces and vehicles appropriately (e.g., classrooms, locker rooms, labs, buses, etc.)
  • Hold lessons and recess outdoors, if possible, and as weather permits
  • Install sanitizer dispensers in high-traffic areas (e.g., main entrance, in each daycare room and classroom, gyms, music rooms, labs, lockers, libraries, etc.)
  • Provide pocket-sized hand sanitizer to caregivers and teachers
  • Promote proper hand hygiene by workers, students, and children (e.g., washing hands after using the washroom)
  • In cafeterias, provide pre-wrapped or packaged food, or have cafeteria workers serve the food, utensils, and condiments
  • Increase the number of objects and equipment (e.g., toys, balls, rackets, sticks, bats, helmets, handouts, books, etc.) available to minimize sharing. If items must be shared, clean and disinfect between users, where possible
  • For musical programs, do not allow students to share musical instruments, such as woodwind and brass (i.e., any instrument that is played by blowing air into it), or microphones
  • Provide online access to course materials, instructors, learning resources, meetings, administrative services, etc., where possible
  • Regularly clean and disinfect high-touch surfaces and objects before and after use (e.g., change tables, games, cots, toys, art supplies, keyboards and mice, tablets, beakers, measuring cylinders, etc.)
  • When cleaning and disinfecting, focus on washroom surfaces (e.g., toilet and urinal levers, faucets, paper towel dispensers) and daycare room surfaces
  • Be considerate when encouraging workers, students, or children to wear a mask or respirator – not all individuals (including children) will be able to wear a mask or respirator

Children-specific tips:

  • Contact parents or guardians to arrange for pick-up as soon as possible after a student or child develops symptoms of a respiratory infectious disease
  • Train workers to avoid contact with children’s secretions (e.g., saliva, mucus, blood, urine, or feces). If secretions are found, quickly put on appropriate personal protective equipment (e.g., disposable gloves) and clean and disinfect the contaminated area
  • Keep hand sanitizer out of reach of children
  • Teach children to avoid:
    • Sharing food and toys with other children
    • Touching their eyes, nose, and mouth with unwashed hands

Consider the Risks

Respiratory infectious disease transmission is increased when individuals are exposed to several risks at once, such as when:

  • Working in crowded, poorly-ventilated indoor spaces
  • Person-to-person interactions are long and frequent
  • Sick individuals are present in the workplace
  • No access to cleaning facilities and products
  • Shared surfaces and objects are touched frequently
  • Seasonal increases in respiratory infectious disease hospitalizations or cases occur

Consider all possible respiratory infectious disease exposure scenarios in your setting and perform a risk assessment. Develop or use an existing risk assessment form to document and evaluate all work-setting characteristics, activities, and job roles. It is good practice to review your assessment regularly (at least annually or whenever something changes) to check your control methods are still effective.

Sample questions to ask during a respiratory infectious disease risk assessment:

  • Are indoor spaces properly ventilated?
  • Where do individuals gather?
  • What activities require interactions, communication, or touching shared objects?
  • How long and frequent are interactions between people?
  • What are the high-touch surfaces and shared objects?
  • Which workers are more vulnerable?
  • Do individuals normally participate in activities that create respiratory particles (e.g., singing, shouting, etc.)?
  • Are people expected to stay in an enclosed space for an extended duration?
  • Does a sick leave policy exist that encourages ill workers to stay home?

Control Measures

Meet your legal occupational health and safety obligations by doing everything reasonably possible in the circumstances to protect workers and ensure the health and safety of the workplace.

To provide workers with the highest level of protection, use multiple workplace controls and personal protective measures in a layered approach. No single measure is entirely effective alone. Be careful not to create new hazards or negatively impact existing controls. Review and adjust measures as necessary in consultation with the health and safety committee or representative.

The selected control measures must be based on the assessed risk to workers. Each workplace and even workers within the same workplace can have different risk levels. Workers at high risk of serious complications may require accommodation.

Consider creating an emergency preparedness and response plan that provides guidance on preventing, detecting, and responding to respiratory infectious diseases in the workplace. It can be written in the form of policies and procedures.


Vaccines work by stimulating an immune response from the body to help protect people from serious diseases.

  • Consider promoting respiratory infectious disease vaccination among eligible workers, if available
  • Consider providing support for workers:
    • To attend local vaccination clinic appointments if these times occur during work hours
    • Experiencing temporary side effects from vaccination
  • Maintain workplace controls and personal protective measures even if most workers are fully vaccinated


Good indoor ventilation decreases the concentration of pathogens in the air and is one of the most effective workplace control measures against respiratory infectious diseases.

  • Ventilate indoor spaces appropriately according to the number of occupants and types of activities
  • Open windows and doors to the outside if it is safe to do so
  • Maintain ventilation systems and seek advice from a ventilation specialist on possible improvements (e.g., increasing air exchanges per hour, reducing or eliminating recirculated air, or upgrading to air filtration and disinfection)
  • If possible, run ventilation systems continuously at low speed or for two hours at maximum airflow before and after buildings are occupied
  • Continuously run local exhaust fans in washrooms and kitchens that vent to the outside to help remove contaminated air
  • Make sure that air circulation or cooling fans do not direct airflow from person to person
  • If ventilation cannot be improved, consider using portable air filtration units with high-efficiency particulate air (HEPA) filters
  • Keep indoor humidity between 30% and 50%

Refer to Indoor Ventilation for Respiratory Infectious Diseases (RIDs) for further guidance and information.

Hygiene Measures

Controlling the release of respiratory particles and having clean hands are effective strategies for reducing the spread of respiratory infectious diseases.

  • Encourage proper hand hygiene and respiratory etiquette
  • Provide hand washing stations or hand sanitizer dispensers (with a minimum 60% alcohol content) in high-traffic areas. Regularly check and restock dispensers
  • Encourage everyone to wash or sanitize their hands at appropriate times:
    • Before and after touching personal protective equipment or a mask
    • After touching shared or high-touch items, equipment, and surfaces
    • Before and after eating or handling food
    • After coughing, sneezing, or blowing their nose
    • After shaking someone’s hand
    • After using the washroom
  • Discourage individuals from touching their eyes, nose, mouth, or mask especially with unwashed hands
  • Reduce the number of shared objects and equipment
  • Do not allow workers to share personal protective equipment or masks
  • Reduce the number of high-touch points by having:
    • Motion activated doors, faucets, toilets, urinals, and lighting
    • Hand motion or foot pedal-activated dispensers (for soap, paper towels, sanitizer, etc.) and lined waste containers
    • No touch methods of tracking worker attendance such as key cards or electronic messaging

Communication and Training

Communicate new and updated workplace controls and personal protective measures to all workers in languages they understand. Specific training requirements and recommendations may vary depending on your jurisdiction. Allow workers the opportunity to ask questions and share concerns. Respond to questions and provide feedback within a reasonable time.

Train workers on specific topics related to respiratory infectious diseases, such as:

  • How to identify and respond to the symptoms
  • What to do if they become sick
  • Reporting requirements
  • Information on vaccines and options for vaccination, if possible
  • How to prevent the spread of the respiratory infectious disease and protect themselves at work
  • When to clean and disinfect, and how to safely use cleaning and disinfecting products
  • How to properly wear, handle, and care for personal protective equipment and masks
  • Ways to stay informed using reputable sources

Post appropriate signs (e.g., Responding to Respiratory Infectious Diseases (RIDs) in the Workplace, Prevent the Spread of Infections, Masks and Respirators in the Workplace: Source Control or PPE?, etc.) where they can be seen by workers and visitors, such as:

  • At entrances
  • Near high-touch surfaces
  • In washrooms, changerooms, and break rooms
  • In doorways and walkways
  • On notice boards

For further guidance and information, refer to Communication and Training for Respiratory Infectious Diseases (RIDs).

Cleaning and Disinfecting

Depending on the surface type and environmental conditions, pathogens can remain on objects for a few hours to days.

  • Clean and disinfect the workplace regularly
  • Focus on high-touch objects and surfaces (e.g., doorknobs, handles, rails, buttons, light switches, and faucets), which should be cleaned and disinfected more often and when visibly dirty
  • Use approved hard surface disinfecting products
  • Provide adequate cleaning and disinfecting supplies and appropriate personal protective equipment
  • Always follow the manufacturer’s instructions when using, handling, or storing the product. Review the product’s label, and (if applicable) safety data sheet to determine what precautions to follow
  • Allow adequate time for workers to disinfect any shared equipment between each use
  • After cleaning and disinfecting:
    • Used cleaning cloths, towels, etc. must be properly handled to prevent cross-contamination and laundered or disposed of after every use
    • Deposit heavily contaminated items into plastic lined waste containers
    • Dispose of garbage regularly

Refer to Cleaning and Disinfecting for Respiratory Infectious Diseases (RIDs) for further guidance and information.


Different screening methods can be used to identify people who could spread respiratory infectious diseases to others. Appropriate actions can be taken when screening identifies contagious individuals.

Screening is not usually required in most workplaces. When conducting active screening, people are screened before being allowed entry. Passive screening can be used in all workplace settings where individuals self-monitor and respond accordingly if they begin feeling sick. Assess your risk and determine if active or passive screening (or both) is right for your workplace.

Individuals who do not pass the screening should take appropriate actions, such as leaving the workplace or wearing a properly fitted mask if they cannot leave immediately.

Refer to Screening for Respiratory Infectious Diseases (RIDs) for further guidance and information.

Responding to Respiratory Infectious Diseases in the Workplace

Take appropriate actions to prevent the spread of a respiratory infectious disease when a sick individual is in the workplace. The risk is increased when multiple people are sick at the same time, and an emergency response may be necessary.

  • When any person experiences symptoms of a respiratory infectious disease while in the workplace:
    • Ask that they wear a mask (preferably a respirator or medical mask, or if neither is available, a well-constructed and well-fitting non-medical mask). A respirator used in this way (i.e., as source control) may not need to be fit-tested
    • If it is a worker, also suggest that they seek medical care
  • Call 911 for medical assistance if symptoms are life-threatening. If it is a worker, also notify their emergency contact
  • Refer to your jurisdictional government department responsible for health and safety and workers’ compensation board for reporting requirements, if required
  • Consider having a sick leave policy to support workers who are sick. Support may include paid or unpaid sick leave
  • Develop and implement an emergency response plan to handle respiratory infectious disease outbreaks

Refer to Responding to Respiratory Infectious Diseases (RIDs) in the Workplace and the Emergency Response Planning Guide for further guidance and information.

Personal Protective Equipment (PPE)

Protective equipment for respiratory infectious diseases includes respirators, medical masks, eye protection, gloves, and gowns.

  • Eye protection (safety glasses, goggles, or face shields) may be worn to protect from splashes. Note: face shields do not provide respiratory protection and cannot replace masks
  • Protective equipment policies for respiratory infectious diseases must not interfere when a higher level of protection is needed for a task
  • Workers may need protective equipment for protection from respiratory infectious diseases if they are:
    • Providing direct care or medical treatment to a person who has a respiratory infectious disease, such as COVID-19
    • Using cleaning and disinfecting products
    • Performing tasks in crowded, poorly ventilated indoor settings, and at higher risk of serious complications from respiratory infections
    • Providing emergency first aid

For further guidance and information, refer to Personal Protective Equipment (PPE) for Respiratory Infectious Diseases (RIDs).

Mask Wearing

A mask is a good option to prevent the spread of respiratory particles.

  • Mask wearing can be encouraged as an additional measure when there is a high risk of respiratory infectious disease spread
  • Masks may be required in some settings where there are individuals at higher risk of serious complications from respiratory infections
  • Masks should be well-constructed, well-fitting, properly worn and cover the nose, mouth, and chin
  • Masks should not be worn by anyone unable to remove it without assistance (e.g., due to their age, ability, or developmental status)
  • Allow workers to wear masks, even if not required, based on their discretion

Refer to Masks for Protection from Respiratory Infectious Diseases for further guidance and information.

For further information on respiratory infectious diseases, including COVID-19, refer to the Public Health Agency of Canada.

Disclaimer: As public and occupational health and safety information may continue to change, local public health authorities should be consulted for specific, regional guidance. This information is not intended to replace medical advice or legislated health and safety obligations. Although every effort is made to ensure the accuracy, currency, and completeness of the information, CCOHS does not guarantee, warrant, represent or undertake that the information provided is correct, accurate or current. CCOHS is not liable for any loss, claim, or demand arising directly or indirectly from any use or reliance upon the information.

Document last updated March 6, 2024